Device for producing sealing disk sets for closure cap shells



April 93 A. J.,JONSSON 2,154,508

DEVICE FOR PRODUCING SEALING DISK SETS FOR CLOSURE CAP SHELLS Filed Jan.23, 1936 5 Sheets-Sheet l Anders Jose-g Tonsspn-v.

|Nva NT Q 21 b ATTV.

April 18, 1939. A. J. JONSSON 2,154,503 DEVICE FOR PRODUCiNG SEA-LINGDISK SETS FOR CLOSURE CAP SHELLS 3 Sheets-Sheet 2 Filed Jan. 23, 1956Anders To sag Jon sson INVENT Q,

April 18, 1939. A. J. JONSSON 2,154,508 DEVICE FOR PRODUCING SEALINGDISK SETS FOR CLOSURE GAP SHELLS Filed Jan. 25, "1956 3 Sheets-Sheet sAnders .Tosef Ionsson.

lNvawrora,

Patented Apr. 18, 1939 UNITED STATES PATENT OFFICE DEVICE FOR PRODUCINGSEALING DISK SETS FOR CLOSURE CAP SHELLS Anders Josef Jonsson,Linkoping, Sweden 10 Claims.

My present invention relates to improvements of the object of myco-pending U. S. Patent application, Serial No. 716,050, filed on March17, 1934.

My said application substantially refers to a machine for producing disksets to be inserted into closure cap shells. Said sets generally consistof a packing disk usually of cork materialhereinafter called sealingdiskand a facing disk or spot. Said spot is punched out of a blank striplaterally in respect of the center axis of the cap and of the sealingdisk and at a longer or shorter distance from both, is centered withrespect to the sealing disk and is then fixed to the sealing disk bymeans of a heated adhesive under pressure and cooling, for example, inconnection with the insertion of the disk set into the cap shell.

The improvements of the above mentioned machine that form the object ofmy present invention chiefly have for their objects to guarantee thecentering and fixing of the spot to the sealing disk, special stepshaving been taken to provide for strong cooling of the disk set afterthe centering of the spot and the heating of the adhesive, and at thesame time to provide for a strong pressure action from a great number ofcooling and pressure plungers. In order that the latter shall not makethe machine too voluminous they are, together with heating plungers,according to the invention arranged in a circle above a table, which,rotating around an axis in the center of the circle, moves the disk setsaround from one plunger to the other in one or more circular paths. Atthe end of the said movement the disk sets, in their proper turns, aremoved intoa discharge channel for the purpose of being moved on to toolsfor immediate and direct insertion into cap shells, or to a cartridge,for example, a tube in which they are stacked for later insertion.

An embodiment of the object of my invention is shown in the accompanyingdrawings.

Figure 1 shows a diagrammatical perspective view of part of the machineto which the present invention relates.

Figure 2 is a section II-II, from above, in Figure 3.

Figure 3 shows a section III-III in Figure 2, and

Figure 4 a view from the left in Figure 2 of a part of the machineindicated by the bracket A in Figure 2.

Figure 5 shows part of the section shown in Figure 2.

In Figure 1 only the principal parts are shown and provided withreference numerals.

Numeral I indicates the frame of the machine, 2 a rotating table, 3 thepunching device, which against the punch die 4 punches out the spot, 5

indicates the blank strip running from a roll 50,, and 6 is theconveyer, which feeds the punched out spots in their proper turns, eachright above its sealing disk. 6a. indicates guides for the conveyer andfor the spot. In this connection I do not mention how the punchingdevice and the sliding member receive their motions, as known machineelements may be used and also have been shown in my co-pendingapplication above mentioned.

The sealing disks are fed from a cartridge 1 through a tube 1a. down onto the above mentioned table 2, which is annular and rotatably mountedin the frame I and which is rotated stepwise by means of some suitablemechanism, for example, a common Maltese gear, the construction of whichwill not be described in this connection as it does not fall within thescope of this invention and as it is well known before. Shoulders or thelike, indicated by 9, on the table serve as drivers for the disks.Between the said shoulders there are provided centering pedestals IDspaced in the same distances as the shoulders. By means of a spindle lleach pedestal I0 is mounted in the table so that the spindle extendssome way beneath the table (Figure 3). l2 indicates a heating plunger,which is movable up and down in a sleeve l3 (Figure 3) located in across piece M, which in its turn is movable up and down and receives itssaid motion from a shaft I la via a cam or crank 8, rod 8a and a lever15 (Figure-1). A bracket IS in the frame guides the sleeve to thenecessary extent. In a known manner an electric resistance for heatingthe plunger is provided inside the plunger. Between the sleeve l3 and astop ring I! (for the purpose of being secured it is preferablybipartite) on the plunger there is a buffer spring [8 imparting asuitable springiness to the plunger when the latter is pressed againstthe underlying sealing disk. The downward motion of the plunger in thesleeve is terminated by the upper edge of the sleeve [3 and by shouldersl9. The cross piece l4 carries still another heating plunger 20 mountedin the same manner.

The plungers, however, differ from each other in that the firstmentioned. plunger l2 with its heating surface, at 2|, is adapted to acton the center portion of the spot, the other plunger having an annularheating surface, at 22, for 55 the purpose of acting upon the spot alongthe edge portion thereof, yet not as far as to the very edge so as notto press the adhesive outside the edge. Between these two plungers thereis a cooling plunger 23 mounted on a spindle 24 fixed in the cross piecel4. It is movable up and down on the spindle and is guided by a grooveand. pin guide 25. Further, the spindle 24 guides a holder 26 for somecentering pins 21 conical at their free ends, the pins 21 being arrangedaround the plunger [2. Under the action of a buffer spring 28 theplunger 23 as well as the holder tend to assume their lower position onthe spindle 24 the said position being determined by the groove and pinguide 25. The three plungers I2, 20 and 23 are spaced in the samedistances as the pedestals l and are placed in such a manner that in allpositions of the table they are each located right above its pedestall0.

Beside the table 2 there is mounted a horizontally movable conveyer Illa(Figures 1, 2, in such a position that a pedestal l0 comes right beforethe table every time the table has been turned one step. The conveyer isthen moved in the direction of the arrow g (Figure 5) and pushes asealing disk e with the spot applied thereon over to an inner positionon the table where it then remains until the table has performed onerevolution when it is pushed from the table towards the center by theconveyer Illa and an intermediate sealing disk.

The conveyer receives its motion from a cam disk 41 (Figure 1), a lever48, an articulated rod 49, a shaft 50 and a driver 5|. As a consequencethe sealing disks during the treatment are moved by the table in twopaths concentrically located with respect to the center of the tableand, in Figure 2, indicated by c, d. Cooling plungers 32 move with thesealing disks in the path (I, the said plungers being mounted in anannular holder 34 rotating with the table 2 (see Figures 1, 3), so thatthey are movable up and down, a spring 35 pressing each of them againstan underlying sealing disk during the greater part of the revolution.During the remaining part of the revolution each plunger passes astationary guide rail 36, on which a roller '31, which is journalled onthe plunger spindle, rides thereby lifting the plunger. The said guiderail is shown in cross section in Figure 3 and in dot-and-dash lines inFigure 2. It is arranged in such a manner that the respective plunger islifted when the sealing disks are to be exchanged by the sliding memberIlla.

The described mechanism operates in the following manner:

During the rotation of the table a sealing disk e is pushed from thepile in the tube 1a by the shoulder 9, which is located behind the same,up to and below the heating plunger l2. At the same time the slidingmember 6 pushes a punched out spot 1 to right above the sealing disk. Bymeans of a spindle 39 and a cam disk 40, which is driven from the shaftMa, the underlying pedestal I0 is lifted to a position immediately belowthe spot. During the upward motion of the pedestal Hi the sealing disk econtacts with the centering pins and is centered by the same withrespect to the spot I. The heating plunger I2 is now pressed down for amoment, and when it is lifted the table 2 is moved one step so that thesealing disk will be located below the cooling plunger 23. At the sametime another sealing disk has been placed below the heating plunger i2,where the above mentioned operation is repeated. During the next movethe first mentioned sealing disk will be located below the heatingplunger 20. A third sealing disk has now been placed below the heatingplunger [2. From Figure 4 it is seen immediately that the plungers i2,20 and 23 are lowered and lifted simultaneously. While passing theplungers I2, 20 and 23 the sealing disks are guided by stationarysegments 53. At the next move of the table the first mentioned sealingdisk comes right before the sliding member Illa and by the latter ispushed into the path d, i. e. 'to below a cooling and pressure plunger,which is lifted by the guide rail 36. At the next move of the table thesaid cooling and pressure plunger is lowered and is pressed against thesealing disk e. It then rotates with the table until it comes back tothe same position when it is pushed away from the table by the slidingmember and a sealing disk lying before the sliding member.

In case the above describeddevices are mount-- ed on a machine makingcap shells the disk sets may be immediately inserted into the capshells. In such a case the respective disk is caused to fall into achannel to be forwarded to the inserting tool. If the sealing disks arenot to be inserted immediately but, for example, are to be packed to beinserted by means of other machines and at some other place, they may befed into a tubular cartridge 4|. The feeding member may consist of apiston 43 (Figure 1), which lifts the disk from below into the tube intime with the sliding member feeding the disks. The said piston receivesits lifting motion by means of a lever 45 and a cam or crank pin 45. -Inorder that the disks shall not fall back, when the piston movesdownwards, the tube is provided with a locking mechanism. The saidlocking mechanism may be mounted in the machine proper, if desired. Thetube is detachable, so that the whole pile of disks may be removed fromthe machine in order to be packed. For full automatic operation theupper end of the tube may be provided with an electric contact, which,when the tube is charged, actuates an electromagnetthe cord is indicatedby 41 which connects the cut-out of the machine, so that the machinestops, after which exchange of tubes can be effected.

Alternatively, the tube 4| may be applied below the table of the machineand the sealing disks be fed directly down into the same by means of thesliding member Ilia. This simpler arrangement, however, involves acertain risk of some disk or other being placed edgewise in the tube bywhich the stacking will be disturbed.

In order to stop the machine, possibly only the feeding of the blankstrip 5, possibly also for simultaneous signaling, incase the supplyingof sealing disks should be unexpectedly interrupted, a so-called feeler52 may be provided in the path of the disks, which in'a suitable manneris connected with the driving mechanism of the machine or of the blankstrip and with a signalling device, respectively, and which keeps theformer in and the latter out of function by the action of the sealingdisks.

Various modifications may be made in construction and arrangement ofparts without departing from the scope of the invention. Especially itmay be mentioned that the invention is not limited to sets of two disksonly. Each disk may for instance, be composed of two or more layers ofmaterial.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a machine for adhesively uniting sealing disks and spots incentered superposed relation, a rotatable table, means for withdrawingan individual sealing disk from a stack and feeding it onto said table,means for rotating the table stepwise to advance said disk-successivelyto different work stations, at one of said stations means to verticallydisplace said disk, guide elements to engage the peripheral edge of thedisk during the vertical displacement of the latter so as to guide thedisk into a predetermined centered position, and means to feed a spotbetween said guide elements into centered superposition with respect tosaid vertically displaced disk, and at some of said stations means forapplying heat and pressure to said disk set, said last-named meanscomprising a series of spaced plungers arranged above the table.

2. In combination with the elements set forth in claim 1, a set ofcooling pressure plungers, and a conveyor at one of said stations formoving said disk set from the heat and pressure means to one of saidcooling pressure plungers,

3. In a machine for adhesively uniting sealing disks and spots incentered superposed relation, a rotatable table, a series of spacedvertically displaceable pedestals arranged in a concentric circle onsaid table, means for rotating the table stepwise to advance thepedestals successively to different work stations, at one of saidstations means for withdrawing an individual sealing disk from a stackand feeding it onto one of said pedestals, at a second station means totemporarily lift each pedestal arriving at said station, guide elementsto engage the peripheral edge of the disk on said pedestal during theupward movement of the latter so as to guide the disk into apredetermined centered position, and means to horizontally fed a spotbetween said guide elements into centered superposition with respect tosaid lifted disk, at at least one of said stations means for applyingheat to said disk set, and at a subsequent station a conveyor for movingsaid set out of the circular path of travel of said pedestals.

4. In a machine for adhesively uniting sealing disks and spots incentered superposed relation, a rotatable table, a series of spacedvertically displaceable pedestals arranged in a concentric circle onsaid table, a series of cooling pressure plungers arranged on said tablealong a circle concentric to said pedestal circle and having a diametersmaller than that of the pedestal circle, means for rotating the tablestepwise to advance the pedestals successively to different workstations, at one of said stations means for withdrawing an individualsealing disk from a stack and feeding it onto one of said pedestals, ata second station means to temporarily lift each pedestal arriving atsaid station, guide elements to engage the peripheral edge of the diskon said pedestal during the upward movement of the latter, so as toguide the disk into a predetermined centered position, and means tohorizontally feed a spot between said guide elements into centeredsuperposition with respect to said lifted disk, at at least one of saidstations means for applying heat to said disk set, and at a subsequentstation a conveyor for moving said set from the circular path of travelof said pedestals to one of said pressure plungers.

5. The combination of elements set forth in claim 1, said plungersincluding one adapted to act on the central portion of the disk set,another adapted to act on the outer portion of the disk set, and anintermediate cooling plunger.

6. The combination with the elements set forth in claim 4, of yieldablemeans urging said plungers down, and means for automatically raisingeach plunger as it comes into alignment with said conveyor.

7. The combination with the elements set forth in claim 3, of receivingmeans adapted to accommodate a plurality of disk sets, said means beingarranged in the path of movement of said conveyor.

8. The combination with the elements set forth in claim 3, of areceiving cartridge adapted to accommodate a plurality of disk sets,said cartridge comprising a tube removably mounted above the path ofmovement of said conveyor, and a piston arranged to push disk setssuccessively up into said tube.

9. The combination with the elements set forth in claim 3, of receivingmeans adapted to accommodate a plurality of disk sets, said means beingarranged in the path of movement of said conveyor, and means forautomatically stopping the operation of the machine after apredetermined number of disk sets have been accommodated in saidreceiving means.

10. The combination of elements set forth in claim 1, said guideelements comprising a vertically yieldable bracket carrying distributedalong a circular line, a plurality of vertically projecting pins conicalat their free ends.

ANDERS J OSEF J ONSSON.

